npm start
There might be a problem with the project dependency tree.
It is likely not a bug in Create React App, but something you need to fix locally.
The react-scripts package provided by Create React App requires a dependency:
"babel-eslint": "9.0.0"
Don't try to install it manually: your package manager does it automatically.
However, a different version of babel-eslint was detected higher up in the tree:
Just remove "babel-eslint": "9.0.0" from package json and install:
npm install babel-eslint --save-dev
Usama Asfar
Student
solved by deleting global babel-eslint file